> Yeah, he was an elementalist back then.
Okay, cool; I didn't mean to imply certainty that he _wasn't_ an elementalist back then, simply that I did not recall him being so. But really, there has been a lot of characters in The Prophecy over the years, and since I don't have Shien's ridiculously keen memory I can't remember every detail about all of them. I do believe you if you say such was the case, and since we are lucky enough to have Shien and she supports the claim, all the better. No problem there.
> From Jack's description, I kind of got the impression that while it is possible to learn to use secondary element(s), it would be almost impossible to use those two together - so he'd be able to temporarily switch to using wind, but not really use wind and fire together?
Correct; while a person using the aforementioned technique to convert energy from one attunement to another would have two kinds of energy-attunement at the same time for as long as this converted energy remained, manifesting both at the same time through elemental magic would indeed be borderline impossible. Elemental magic is instinctual and relies heavily on the mage's will and emotions, to which different elements react differently, so manifesting two elements at once would require that one was able to quite literally split one's very self in two and have each half control a separate element, due to the very method of deployment and control differing so greatly between them. So it would be one element at a time, but grant a capability to more-or-less switch between them.
(Just because it occurred to me that it might be relevant to mention: fire magic commonly relies on its wielders passion and enthusiasm to manifest and draw power from, and must be coaxed into obedience lest it run wild; air magic is associated with feelings of joy and/or fear, and must be strictly leashed by the wielder's will and dominated to prevent it from reclaiming its freedom.)
> But yeah ... I believe Jack said you cannot produce liquid fire without dedicated magic back then. ((Edit: I also imagine keeping vials of liquid fire on your person for longer durations would be dangerous as all hell, even more so for a physical fighter. Just imagine if he fell or took an impact to the wrong region...))
Strictly speaking I suppose liquid fire _could_ be made without the immediate assistance of a magus, as long as those of the ingredients that need to be so were magically altered in advance. It would mean that one had to find a magic-wielder every time one needed to restock on the ingredients, though... and that one carried around some twenty pounds of delicate and fragile alchemical equipment. And yes, carrying liquid fire around like that would indeed be rather dangerous, especially for extended periods of time; not only would an impact potentially crack the glass and cause it to explode while still on the wielder's person, but atmospheric air might seep past the seal over time (especially one made on the move and with less-than-perfect-quality apparatus) causing it to turn extremely volatile to the point of it detonating at a slight jostle. (It also occurs to me that one would have to acquire new containers with air-tight seals for every new batch one had to make... which are anything but cheap. In fact none of the ingredients would be so, and the apparatus would be very expensive as well. Eh, it's possible, but the more I think about it, the more unlikely it seems.)
Flashdust, that's what I called it! I knew you'd remember, Shien. And yeah, over time I've reconsidered many things about the potential future Reniam, the absence or disuse of gunpowder being one of them. But in current time and age gunpowder isn't used in the immediately relevant regions of the world, so flashdust is the only real alternative. As for future Reniam: that will have to wait for the future. As I mentioned even back then, depending on how events play out in this time, there may not even _be_ a future Reniam.
> ((Is it a terrible idea to bring in a wildcard chaos deity? I am still tempted to.))
Eeeeeeeeeeeh... Please don't. Really. I was somewhat supporting of the idea when it was just a deity, but "chaos" is literally the _one_ domain that I can't allow a deity to have. For... reasons.